app/Models/Producto.php

@@ -22,4 +22,12 @@ public function pedidos(): BelongsToMany
     {
         return $this->belongsToMany(Pedido::class);
     }
+
+    /**
+     * Las caracteristicas que pertenecen al producto.
+     */
+    public function caracteristicas(): BelongsToMany
+    {
+        return $this->belongsToMany(Caracteristica::class);
+    }
 }

database/migrations/2024_03_12_201211_create_productos_caracteristicas_table.php

@@ -0,0 +1,31 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::create('productos_caracteristicas', function (Blueprint $table) {
+            $table->id();
+            $table->unsignedBigInteger('producto_id');
+            $table->unsignedBigInteger('caracteristica_id');
+            $table->timestamps();
+            $table->foreign('producto_id')->references('id')->on('productos');
+            $table->foreign('caracteristica_id')->references('id')->on('caracteristicas');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('productos_caracteristicas');
+    }
+};